Craig R. Donaldson
YOU?
Author Swipe
View article: Beam dynamic study of a Ka-band microwave undulator and its potential drive sources
Beam dynamic study of a Ka-band microwave undulator and its potential drive sources Open
Microwave undulators (MUs) have great potential to be an alternative solution to permanent magnet undulators in a free electron laser (FEL) when shorter undulator periods are required. In this paper, the factors that affect the choice of t…
View article: The development of broadband millimeter-wave and terahertz gyro-TWA
The development of broadband millimeter-wave and terahertz gyro-TWA Open
The gyrotron travelling wave tube amplifiers (gyro-TWAs) presented in this paper can operate with high efficiency (30%), huge powers and wide bandwidths at high frequencies that no other amplifier can provide. In principle, this is a techn…
View article: The Development of broadband millimeter-wave and terahertz gyro-TWAs
The Development of broadband millimeter-wave and terahertz gyro-TWAs Open
The gyrotron travelling wave tube amplifiers (gyro-TWAs) presented in this paper can operate with high efficiency (30%), huge powers and wide bandwidths at high frequencies that no other amplifier can provide. In principle, this is a techn…
View article: Broadband Amplification of Low-Terahertz Signals Using Axis-Encircling Electrons in a Helically Corrugated Interaction Region
Broadband Amplification of Low-Terahertz Signals Using Axis-Encircling Electrons in a Helically Corrugated Interaction Region Open
Experimental results are presented of a broadband, high power, gyrotron traveling wave amplifier (gyro-TWA) operating in the (75-110)-GHz frequency band and based on a helically corrugated interaction region. The second harmonic cyclotron …
View article: Design of a spline horn for a W-band gyro-TWA
Design of a spline horn for a W-band gyro-TWA Open
This work was supported by the Engineering and Physical Sciences Research Council (EPSRC) U.K. under Research Grant EP2K029746/1, and Science and Technology Facilities Council (STFC) U.K. under Research Grants ST/K006673/1 & ST IK006703/1,…